问题
选择题
—How much ______ the T-shirts?
—______28 dollars. [ ]
A. does; It
B. are; Are
C. are; They're
D. is; It's
答案
答案：C
搜题请搜索小程序“爱下问搜题”
—How much ______ the T-shirts?
—______28 dollars. [ ]
A. does; It
B. are; Are
C. are; They're
D. is; It's
答案：C
根据表中给出的逻辑关系绘制的双代号网络图如下所示：
| 工作名称 | A | B | C | D | E | F |
| 紧前工作 | - | - | A、B | A、B | B | C、D、E |
上图中绘图错误的是（）。
A．逻辑关系表达不正确
B．节点编号有错误
C．出现了相同代号的工作
D．有多余的虚工作